以下是公制粗螺紋的底孔徑一覽表 |
螺紋規格 | 牙距 | 最小孔徑 | 最大孔徑 單位MM | M 1 × 0.25 | 0.75 | 0.729 | 0.785 | 1.1 × 0.25 | 0.85 | 0.829 | 0.885 | 1.2 × 0.25 | 0.95 | 0.929 | 0.985 | 1.4 × 0.3 | 1.1 | 1.075 | 1.142 | 1.6 × 0.35 | 1.25 | 1.221 | 1.321 | 1.8 × 0.35 | 1.45 | 1.421 | 1.521 | 2 × 0.4 | 1.6 | 1.567 | 1.679 | 2.2 × 0.45 | 1.75 | 1.713 | 1.838 | 2.5 × 0.45 | 2.1 | 2.013 | 2.138 | 3 × 0.5 | 2.5 | 2.459 | 2.599 | 3.5 × 0.6 | 2.9 | 2.85 | 3.01 | 4 × 0.7 | 3.3 | 3.242 | 3.422 | 4.5 × 0.75 | 3.8 | 3.688 | 3.878 | 5 × 0.8 | 4.2 | 4.134 | 4.334 | 6 × 1 | 5 | 4.917 | 5.153 | 7 × 1 | 6 | 5.917 | 6.153 | 8 × 1.25 | 6.8 | 6.647 | 6.912 | 9 × 1.25 | 7.8 | 7.647 | 7.912 | 10 × 1.5 | 8.5 | 8.376 | 8.676 | 11 × 1.5 | 9.5 | 9.376 | 9.676 | 12 × 1.75 | 10.3 | 10.106 | 10.441 | 14 × 2 | 12 | 11.835 | 12.21 | 16 × 2 | 14 | 13.835 | 14.21 | 18 × 2.5 | 15.5 | 15.294 | 15.744 | 20 × 2.5 | 17.5 | 17.294 | 17.744 | 22 × 2.5 | 19.5 | 19.294 | 19.744 | 24 × 3 | 21 | 20.752 | 21.252 | 27 × 3 | 24 | 23.752 | 24.252 | 30 × 3.5 | 26.5 | 26.211 | 26.771 | 33 × 3.5 | 29.5 | 29.211 | 29.771 | 36 × 4 | 32 | 31.67 | 32.27 |
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以下為美制螺紋的底徑表 |
螺紋規格 | 牙距 | 最小孔徑 | 最大孔徑 單位MM | NO.1 -64UNC | 1.55 | 1.425 | 1.582 | 2 -56 | 1.8 | 1.695 | 1.871 | 3 -48 | 2.1 | 1.941 | 2.146 | 4 -40 | 2.3 | 2.157 | 2.385 | 5 -40 | 2.6 | 2.487 | 2.697 | 6 -32 | 2.8 | 2.642 | 2.895 | 8 -32 | 3.4 | 3.302 | 3.53 | 10 -24 | 3.9 | 3.683 | 3.962 | 12 -24 | 4.5 | 4.344 | 4.597 | 2001-4-20 | 5.1 | 4.979 | 5.257 | 5/16 -18 | 6.6 | 6.401 | 6.731 | 3/8 -16 | 8 | 7.798 | 8.153 | 7/16 -14 | 9.4 | 9.144 | 9.55 | 1/2 -13 | 10.8 | 10.592 | 11.023 | 9/16 -12 | 12.2 | 11.989 | 12.446 | 5/8 -11 | 13.6 | 13.386 | 13.868 | 3/4 -10 | 16.5 | 16.307 | 16.84 | 7/8 - 9 | 19.5 | 19.177 | 19.761 | 1英寸-8 | 22.2 | 21.971 | 22.606 |
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以下是美制細牙的內螺紋孔徑表 |
螺紋規格 | 牙距 | 最小孔徑 | 最大孔徑 單位MM | 1 -72 | 1.55 | 1.474 | 1.612 | 2 -64 | 1.85 | 1.756 | 1.912 | 3 -56 | 2.1 | 2.025 | 2.197 | 4 -48 | 2.4 | 2.271 | 2.458 | 5 -44 | 2.7 | 2.551 | 2.74 | 6 -40 | 2.9 | 2.82 | 3.022 | 8 -36 | 3.5 | 3.404 | 3.606 | 10 -32 | 4.1 | 3.963 | 4.165 | 12 -28 | 4.6 | 4.496 | 4.724 | 1/4--28 | 5.5 | 5.36 | 5.588 | 5/16 -24 | 6.9 | 6.782 | 7.035 | 3/8--24牙 | 8.5 | 8.382 | 8.636 | 7/16 -20 | 9.9 | 9.729 | 10.033 | 1/2 -20 | 11.5 | 11.329 | 11.607 | 9/16 -18 | 12.9 | 12.751 | 13.081 | 5/8 -18 | 14.5 | 14.351 | 14.681 | 3/4 -16 | 17.5 | 17.323 | 17.678 | 7/8--14 | 20.5 | 20.27 | 20.675 | 1寸-12 | 23.2 | 23.114 | 23.571 |
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最后,還有公制細牙及其它牙距的底徑表 |
螺紋規格 | 牙距 | 最小孔徑 | 最大孔徑 單位MM | M 2.5 × 0.35 | 2.2 | 2.121 | 2.221 | 3 × 0.35 | 2.7 | 2.621 | 2.721 | 3.5 × 0.35 | 3.2 | 3.121 | 3.221 | 4 × 0.5 | 3.5 | 3.459 | 3.599 | 4.5 × 0.5 | 4 | 3.959 | 4.099 | 5 × 0.5 | 4.5 | 4.459 | 4.599 | 5.5 × 0.5 | 5 | 4.959 | 5.099 | 6 × 0.75 | 5.3 | 5.188 | 5.378 | 7 × 0.75 | 6.3 | 6.188 | 6.378 | 8 × 1 | 7 | 6.917 | 7.153 | 8 × 0.75 | 7.3 | 7.188 | 7.378 | 9 × 1 | 8 | 7.917 | 8.153 | 9 × 0.75 | 8.3 | 8.188 | 8.378 | 10 × 1.25 | 8.8 | 8.647 | 8.912 | 10 × 1 | 9 | 8.917 | 9.153 | 10 × 0.75 | 9.3 | 9.188 | 9.378 | 11 × 1 | 10 | 9.917 | 10.153 | 11 × 0.75 | 10.3 | 10.188 | 10.378 | 12 × 1.5 | 10.5 | 10.376 | 10.676 | 12 × 1.25 | 10.8 | 10.647 | 10.912 | 12 × 1 | 11 | 10.917 | 11.153 | 14 × 1.5 | 12.5 | 12.376 | 12.676 | 14 × 1 | 13 | 12.917 | 13.153 | 15 × 1.5 | 13.5 | 13.376 | 13.676 | 15 × 1 | 14 | 13.917 | 14.153 | 16 × 1.5 | 14.5 | 14.376 | 14.676 | 16 × 1 | 15 | 14.917 | 15.153 |
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